MTB3-ER40 Shank Suitable for CNC Engraving Machine and Milling Machine Tools with Wrench and 15 Pcs ER40 Collet

Feature:
Made of high-quality alloy steel, which is sturdy, durable and tough
Suitable for cnc engraving machine and milling machine tools

Specification:
Drawbar end thread: 3/8 inch - 16
Accuracy: 0.0005 inch
Collet size range: 1/8, 3/16, 1/4, 5/16, 3/8, 7/16, 1/2, 9/16, 5/8, 11/16, 3/4, 13/16, 7/8, 15/16, 1 inch

Package include:
1 x mtb3-er40 collet chuck
1 x wrench
15 x er40 spring collet